Outlet coupling device for therapeutic bath coils



June 24, 1930.

. R. PABST OUTLET COUPLING DEVICE'FOR THERAPEUTIC BATH COILS Filed April 18. 929

M VENTOR ATTORNEY.

Patented June 24, 1930 UNET SATES RICHARD PAIBST, F WU'RZBURG, GERMANY Application filed April 18, 1929, Serial no.

This invention relates to heating devices, more particularly to heating devices of the kind adapted for heating therapeutic baths, although my device is not confined to such use; and the invention has for its general object and purpose to provide an improved construction of this character which is simple, compact, and easily operated,and which is provided with supporting swing arms whereby to be swung'into and'out of the contents of the bath receptacle; a}

In comparison. with the known heating devices, which are designed to utilize high pressure steam as the medium whereby to be heated, the device of" my present invention has for its primary objectthe provision of a novel construction with which steam under low pressure can be satisfactorily used as the heating medium.

To this end, in order to provide for the rapid discharge'of water resulting from the quick cooling of the steam,- the heating coil is constructed with a low point outlet extension through which the water of condensation is discharged while the coil is in use,

and thisoutlet extension is equipped with a self closing valve designedto'keep the liquid of the bath from entering the coil and which is adapted upon proper engagement with an outer valve, arranged in the side wall of thebath receptacle, to be pressed open so astoinsure the dischargeof the water of con densation. In this arrangement, according to a novel feature of my invention, the valve of the outlet extension is designed to cooperate with the valve in the side wall of the bath recept'able, so that upon proper actua 856,030, and in. Germany October 18, 1927.

ture on the bath receptacle discharge pipe for the discharge of the water of condensetion and vapor while the coil is being used for heating. the contents of the bath. By

means of the arrangement herein disclosed,

low pressure steam may be employed effectively in the heating coil for heating the contents of the bath receptacle, and in addition to this the coil is free "to 'be i'ntermittently swung into and out ofthe contents of the bath receptacle, it being particularly desirable, where an effervescent agent is employed in the bathing liquid, to have available a heating construction which will readily permit intermittent application of the heating structure to the contents of the bath receptacle. r

Other objects of the invention will appear hereinafter.

The invention consists in the features of construction and in the form, arrangement, and combination of parts as hereinafter more fully described and as particularly defined in the annexed claims.

The invention will be best understood by referring to the accompanying drawing, forming a material part of this application, and in which Fig. 1 represents a cross section through a bath receptacle andthrough my improved'heating device which is shown as it appears when swung intothe receptacle to heat the liquidtherein and to operate the outlet for the water ofcondensation Fig. 2 represents a top plan view and'section, with parts broken away; and Fig. 3 represents on a larger scale a sectional view taken transversely through the-coil and longitudinallyofthe outlet extension and cooperating valve structures. a

With more particular reference to the accompanying drawing, the numeral "10 denotes a bath receptacle, 11 denotes an axis member which is mounted'fo'r turning movement in suitable bearing means 12'arranged eXteriorly of the bath receptacle and at a suitable elevation above the top thereof; I and the axis member 11 isprovided with tion, in which swing arms support theheat ing coil from the axis member, it is possible readily to swing the heating coil'into and out of the contents of the bath receptacle. The swing arm 13 is disclosed as comprising a pipe connection by which the steam is introduced into the heating coil, the steam first passing to the pipe 13 by means of a pipe connection 16 which is in communication therewith and constitutes a part of the axis member. The heating steam maybe led to the connection 16 from any suitable source of supply. I

The coil 15 is illustrated as having outer lengths 17 connected by an end portion 18, inner lengths 19 connected by an end portion 20, the inner. lengths 19 being connected in turn to the outer lengths by end portions 21. The connected outer and inner coil lengths are held together in the desired parallel relation, so as to provide a compact elongated coil structure, by means of cross pieces 22 which embrace the lengths of the coil. As shown in Figs. 1 and 3, the coil structure is curved in a transverse direction so as to make provision for a transversely extending drain outlet pipe 23 through which the water of condensation will flow from the low point of the coil, herein shown to be one of the inner lengths 19. Said drain outlet pipe 23 extends laterally beyond the coil structure and is provided at its outer end with a valve structure comprising a tubular member 24, a valve casing 25 having one end thereof slidably fitting upon the tubular member 24:, and a valve 26 having a stem 27 adjustably secured in a cross piece 28 within the tubular member 2 1.. In the outer end 29 of the valve casing is provided an outwardly tapering seat 30rfor the valve 26, and within the valve casing is a coiled spring 31 which is imprisoned between the casing end 29 and tubular member 2 1, the oifice of the spring being to normally press the valve casing outwardly so that the valve 26 will firmly occupy the seat 30 so as to seal the end of the valve casing against the entrance of liquid into the coil. For operatively maintaining the valve casing upon the tubular member2 l, the latter is provided with a ring stop 32 within an annular recess 33 in the valve casing, which ring stop'limits the inward 'movement of the valve casing while a collar device 34 applied to the valve casing limits the movement of the latter in an outward direction when'it engages said 7 ring stop.

Arranged in a side wall of the bath receptacle is a tubular fitting 35 which forms part of an outlet valve structure including a discharge pipe 36, the said tubular fitting having a wall 37 therein containing an outwardly tapering seat 33' for the valve 39 whose stem 40 is slidably fitted in'a cross piece 41 within the discharge pipe 36. spring 12, coiled about the stem 10 and imprisoned between the valve 39 and the cross piece 41, serves as the means for resiliently maintaining this valve in its seat 38. Now, under this arrangement, the swing arms 13 and 1 1 are of such length that they support the coil within the bath receptacle in position for the casing end 29 to engage the wall 37 as shown in Fig. 3, there being by preference a suitable washer 4L3 inset in said wall to provide a suitable seal between it and the casing end. According to a feature of my invention the valve 26 is of considerable less size than the valve 39, so that when the coil is vigorously pressed toward the outlet valve structure, the valve casing 25 will yield inwardly upon the tubular member and thereby permit the valve 26, which is rigid with the tubular member, to press the valve-39 away from its seat coincidentally with the unseating of the valve 26, with the result that open communication is provided between the valve casing 25 and discharge pipe 36 for the passage of the water of condensation draining through the outlet pipe 23 from the coil.-

From theforegoing description, considered in connection with the accompanying drawing, the construction, manner of use and several advantages of my present invention will be readily understood. It will be apparent that upon thrusting the heating coil toward the discharge pipe, the valve casing 25 will be actuated to permit the unseating of the valves 26 and 39 whichmanifestly is accomplished by the thrustingvaction of a the valve 26 against the valve 39; and as a means for thrusting the heating coil toward the discharge pipe for the bath receptacle, I may provide a suitable lever 1 1 suitably forked (forks not shown) about the coil and having the, lower ends of the forks engaged in a recess 15 within the bottom of the bath receptacle. By this arrangement, upon moving the lever 1% in the direction'indicated by the arrow 46, communication may be readily established between the coil outlet pipe and the receptacle discharge pipe for the escape of the water of condensation-from the coil.

I claim:

1. A device for use in a bath receptacle to provide an outlet from a steam coil therein, comprising a discharge pipe with a selfclosing valve fixed to the receptacle, and a self-closing valve on the coil outlet arranged to be pressed against said first mentioned valve to cause the opening movement of both of said valves whereby to allow the discharge of liquid from said coil outlet to said discharge pipe, said coil being movable toward the discharge pipe so as to provide an application of force for effecting the opening movement of said valves.

2. A device for use in a bath receptacle to provide an outlet from a steam coil therein,

comprising a discharge pipe fixed to the receptacle and provided with a self-closing outwardly openable valve, a drain outlet pipe on the coil provided with a self-closing outwardly unseating valve, said valves being adapted to cooperate, and said outlet pipe valve being of less size than the discharge pipe valve, adapted to be projected through the seat of the latter, whereby outward thrusting of the outlet pipe valve against the discharge pipe valve will cause the unseating of both valves, said coil being movable toward the discharge pipe so as to provide an application of force for effecting the thrusting of the outlet pipe valve against the discharge pipe valve.

3. A device for use in a bath receptacle to provide an outlet from a steam coil therein, comprising a discharge pipe fixed to the receptacle and having a wall with an outwardly tapering seat, a self-closing valve fitting said seat and openable outward, a drain outlet pipe on the coil, a casing slidable on the outlet pipe and having an outwardly tapering seat, a valve fixed to the outlet pipe and fitting the casing seat, to be opened outwardly on the inward movement of the casing, and means for moving the coil in a direction to press the casing against said wall with the casing valve against the discharge pipe valve, whereby to open both valves on the inward movement of the casing relatively to the outlet pipe.

4. In combination, a bath receptacle, a movable heating coil therein, a discharge pipe fixed to the receptacle in relation to the movement of the coil and provided with a valve structure including openable valve means, a drain outlet pipe on the coil provided with a valve structure including openable valve means, said valve s tructures being constructed and arranged to cooperate to provide for the opening of both valve means on pressing the outlet pipe valve structure against the discharge pipe valve structure, accomplished by the movement of the coil, whereby to open communication for the passage of liquid from the coil outlet pipe to the receptacle discharge pipe.

5. In combination, a bath receptacle, a swingable heating coil therein, a discharge pipe fixed to the receptacle and provided with a valve structure including openable valve means, a drain outlet pipe on the coil provided with a valve structure including openable valve means, said valve structures being constructed and arranged to cooperate to provide for the opening of both valve means on pressing the outlet pipe valve structure against the discharge pipe valve structure, whereby to open communication for the passage of liquid from the coil out let pipe to the receptacle discharge pipe, and means by which to swing the coil in a direction to press the outlet pipe valve structure against the discharge pipe valve structure.

6. In combination, a bath receptacle, a discharge pipe therefor provided with a valve structure including openable valve means, a heating coil within the receptacle arranged for movement toward the valve structure, a drain outlet pipe for the coil extending toward the discharge pipe valve structure, a valve structure on the end of the outlet pipe including openable valve means, means for moving the coil to press the outlet pipe valve structure against the discharge pipe-valve'structures, the valve means in the two valve structures being partly exposed for contact and jointly cooperating to be opened thereby when the outlet pipe valve structure is pressed against the discharge pipe valve structure.

In tsetimony' that he claims the foregoing as his invention, he has signed his name hereto.

RICHARD PABST. 

